Deposition of dry particles on a fin-and-tube heat exchanger by a coupled soft-sphere DEM and CFD

Välikangas, Turo; Hærvig, Jakob; Kuuluvainen, Heino; Maso, Miikka Dal; Peltonen, Petteri; Vuorinen, Ville

doi:10.1016/j.ijheatmasstransfer.2019.119046

Cited by 15 publications

(2 citation statements)

References 69 publications

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“…For this purpose, a novel parametric open source meshing tool Swiftblock developed by the authors (https: //swiftblock.readthedocs.io/) was used. The authors have successfully used the meshing tool in multiple different studies in the past [41][42][43]. The blocking strategies that were created for the plain fin FTHE are illustrated in Fig.…”

Section: Parametric Structured Meshingmentioning

confidence: 99%

Parametric CFD study for finding the optimal tube arrangement of a fin-and-tube heat exchanger with plain fins in a marine environment

Välikangas

Folkersma

Maso

et al. 2022

Applied Thermal Engineering

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In the past, fin-and tube heat exchanger (FTHE) tube pattern ratios have been largely based on ad-hoc design principles. Here, we investigate the optimal tube arrangements for a FTHE with plain fins in marine environments represented by two different air types; one for unfiltered air with high condensation rate and one for clean dry filtered air conditions. The thermal-hydraulic efficiency of the FTHE design is measured by comparing a modified ratio of Colburn j-factor and Fanning friction factor. The regression model generated from the CFD data is then used to identify the maximum efficiency for two design specific fin pitches separately. We identified two optimal tube patterns: one for a large fin pitch for unfiltered air, and another for a small fin pitch for filtered air. Manufacturing restrictions were found to significantly limit the maximum achievable efficiency of a tube pattern. By neglecting the related manufacturing restrictions, 4% higher efficiency for a fin pitch of 1.5 mm and 23% higher efficiency for a fin pitch of 3.5 mm is achieved. Without any application specific limitations or manufacturing restrictions the fin pitch 1.5 mm can have a 36% increased efficiency than fin pitch 3.5 mm. These novel results show that development in manufacturing have potential for significant improvements in thermal-hydraulic efficiency.

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Section: Parametric Structured Meshingmentioning

confidence: 99%

Parametric CFD study for finding the optimal tube arrangement of a fin-and-tube heat exchanger with plain fins in a marine environment

Välikangas

Folkersma

Maso

et al. 2022

Applied Thermal Engineering

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“…Fouling is generally a net effect of particle deposition (increase deposit) and deposition erosion (remove deposit) driven by for example shear stress. Fouling has been studied extensively including for tube bundle heat exchangers [1], fin-and-tube heat exchangers [2], ventilation ducts [3] and slit microchannel [4], and still not well understood fundamentally given the complex interacting phenomena of fluid flow, heat transfer, particle transport, particle deposition and deposit erosion occurring simultaneously. Fundamental understanding can be easier derived from simpler geometry, e.g.…”

Section: Introductionmentioning

confidence: 99%

Curvature Effect on Fouling and Heat Transfer of a Thick Curved Plate

Hongying,

Goharzadeh,

Islam

et al. 2023

International Conference on Fluid Flow and Thermal Science

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Fouling and heat transfer on a plate depends strongly on the plate geometry. The present study assesses the influence of plate curvature on fouling (combined particle deposition and deposit erosion) and heat transfer on a thick curved plate with volumetric heat generation under cross-flow configuration. Convex, concave and flat plates are considered for three different plate orientations: parallel °0 , inclined °45 and perpendicular °90 to the flow. A numerical model with flow, heat transfer, particle transport, particle deposition and deposit erosion fully-coupled is employed. It is found that the amount of deposit formed generally increases with the projected blockage area of the plate with a thicker deposit layer on the upstream facing plate surface, deposit erosion is dominant in the upper and lower flow passages, and exposed tip or plate surface, i.e. not covered by deposit, is the most important in dissipating the heat within the plate to the adjacent flowing fluid.

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Laminar cross-flow convective heat transfer of a finned cylindrical tube in the presence of particle deposition and deposit erosion

Qiangshun,

Hongying,

Goharzadeh

et al. 2024

Applied Thermal Engineering

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Deposition of dry particles on a fin-and-tube heat exchanger by a coupled soft-sphere DEM and CFD

Cited by 15 publications

References 69 publications

Parametric CFD study for finding the optimal tube arrangement of a fin-and-tube heat exchanger with plain fins in a marine environment

Parametric CFD study for finding the optimal tube arrangement of a fin-and-tube heat exchanger with plain fins in a marine environment

Curvature Effect on Fouling and Heat Transfer of a Thick Curved Plate

Laminar cross-flow convective heat transfer of a finned cylindrical tube in the presence of particle deposition and deposit erosion

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